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Old 04-21-2017, 08:27 AM   #1
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Default Stone carvings confirm how comet struck Earth in 10,950BC

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Ancient stone carvings confirm how comet struck Earth in 10,950BC, sparking the rise of civilizations



By Sarah Knapton, science editor
21 APRIL 2017 • 11:25AM


Ancient stone carvings confirm that a comet struck the Earth around 11,000BC, a devastating event which wiped out wooly mammoths and sparked the rise of civilisations.

Experts at the University of Edinburgh analysed mysterious symbols carved onto stone pillars at Gobekli Tepe in southern Turkey, to find out if they could be linked to constellations.

The markings suggest that a swarm of comet fragments hit Earth at the exact same time that a mini-ice age struck, changing the entire course of human history.

Using a computer programme to show where the constellations would have appeared above Turkey thousands of years ago, they were able to pinpoint the comet strike to 10,950BC, the exact time the Younger Dryas begins according to ice core data from Greenland.

The Younger Dryas is viewed as a crucial period for humanity, as it roughly coincides with the emergence of agriculture and the first Neolithic civilisations.

Before the strike, vast areas of wild wheat and barley had allowed nomadic hunters in the Middle East to establish permanent base camps. But the difficult climate conditions following the impact forced communities to come together and work out new ways of maintaining their crops, through watering and selective breeding, and so farming was born.

Edinburgh researchers said the carvings appear to have remained important to the people of Gobekli Tepe for millennia, suggesting that the event and cold climate that followed likely had a very serious impact.
http://www.telegraph.co.uk/science/2...0950bc-wiping/
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Old 04-21-2017, 10:12 AM   #2
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Interesting. The Younger Dryas event has been controversial for a long time now. Let's see who in the scientific community salutes this.
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Old 04-21-2017, 12:52 PM   #3
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The problem with this is that if the Younger Dryas was caused by meteor impacts, it would have been a global event. But, it was actually quite localized to the Northern Hemisphere and, in particular, areas adjacent to the N. Atlantic. The effects of meteors are like those of volcanoes - they put massive amounts of dust and other tiny particles into the upper atmosphere. These spread around the globe - like we saw with Pinatubo or Krakatoa. But, the data are inconsistent with this because S. America, Africa, Australia and Antarctica did not experience any significant cool down in the Younger Dryas.

The predominant theory is still that freshwater shut down the Gulf Stream and caused a big cool down for NE North America, Greenland and NW Europe. That explains the localized impact much better.
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Old 04-21-2017, 01:12 PM   #4
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Could a comet impact have pushed glacial ice into the N. Atlantic? I didn't notice mention of where this comet was supposed to have hit.
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Old 04-21-2017, 01:41 PM   #5
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Could a comet impact have pushed glacial ice into the N. Atlantic? I didn't notice mention of where this comet was supposed to have hit.
There has been talk of that for many years. Like a comet hitting a huge ice dam and releasing a bunch of freshwater into the N Atlantic all at once. Seems a bit far fetched because the odds of one actually hitting an ice dam must be astronomical (haha).

Other theories involve a meteor hitting the boreal forests south of the ice sheets, depositing a bunch of soot onto the ice sheets, and thus increasing the melting rate and therefore the amount of fresh water going into the N Atlantic. Another theory is that paleoindians set forests alight to flush out wildlife, with the same effect.
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Old 04-21-2017, 01:46 PM   #6
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Quote:
Originally Posted by Sysiphus View Post
The problem with this is that if the Younger Dryas was caused by meteor impacts, it would have been a global event. But, it was actually quite localized to the Northern Hemisphere and, in particular, areas adjacent to the N. Atlantic. The effects of meteors are like those of volcanoes - they put massive amounts of dust and other tiny particles into the upper atmosphere. These spread around the globe - like we saw with Pinatubo or Krakatoa. But, the data are inconsistent with this because S. America, Africa, Australia and Antarctica did not experience any significant cool down in the Younger Dryas.

The predominant theory is still that freshwater shut down the Gulf Stream and caused a big cool down for NE North America, Greenland and NW Europe. That explains the localized impact much better.
There are several theories about what may have contributed to the Younger Dryas Event. Some sort of space borne impact or explosion is one of them.

The thing with Pinatubo, Krakatau, and most importantly Tambora is they were all fairly near the equator which makes it easy for their effects to slop over into the southern hemisphere.

IF there was a cometary impact/explosion in the northern hemisphere that precipitated or significantly contributed to the event it is believed it may have occurred fairly far north. Possibly as far south as the Carolinas (the Carolina Bays theory), but possibly as far north as to be well over the Laurentide (North American) Ice Sheet, which was already beginning to recede producing significant melt water flows.

I believe the prevailing consensus was that it was purely driven by climate change, but nevertheless there is evidence to suggest some sort of spaceborne impact/explosion may have contributed as well.

I am of the belief we may possibly see a hybrid theory arise combining both the way we are finally seeing one about the dinosaur extinction 65 millions years ago where it was a one-two (and possibly three) punch of the Deccan Traps, the Chixaclub asteroid impact, and an already begun process of climate change.

Younger Dryas Event
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